Manipulate images with minimal use of memory via ImageMagick

This pure Ruby library can read and write PNG images without depending on an external image library, like RMagick. It tries to be memory efficient and reasonably fast. It supports reading and writing all PNG variants that are defined in the specification, with one limitation: onl...

ruby-vips is a binding for the libvips image processing library. It is fast and it can process large images without loading the whole image in memory.

RMagick is an interface between Ruby and ImageMagick.

Ruby/Pango is a Ruby binding of pango-1.x based on GObject-Introspection.

paperclip-optimizer is a Paperclip processor for optimizing and minifying uploaded images.

Ruby bindings for cairo

A ruby ImageMagick/GraphicsMagick library that doesn't suck

Thin ImageMagick DSL with smart command composition

ImageScience is a clean and happy Ruby library that generates thumbnails -- and kicks the living crap out of RMagick. Oh, and it doesn't leak memory like a sieve. :) For more information including build steps, see http://seattlerb.rubyforge.org/

dHash and IDHash perceptual image hashing/fingerprinting

Ruby/RSVG2 is a Ruby binding of librsvg-2.x.

Simple Ruby stateless module interface to imagemagick.

RMagick replacement which uses ImageMagick directly by constructing chainable commands

Turns a video file into an animated gif.

Simple image manipulation using Apple's Core Image technology. Scale, rotate, flip, convert, overlay, and more.

A service for image manipulation - built as an extensible wrapper of Imagemagick which handles caching, c/o the Dragonfly gem.

a library for automated lossless image optimization

Ruby bindings for DevIL cross platform image loading library